City Council Study Session Agenda and Packet 2022 11 07

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18.28.240 Accessory dwelling unit, residential. Accessory dwelling units are allowed in conjunction with all single -household dwelling units and two - household dwelling units in residential zone districts, including R-E, R-1, R-1A, R-2, R-3 and PUD, subject to the following conditions: (1) Conformance to development standards. Any accessory dwelling unit must meet the same development standards required for the principal dwelling unit structure. (2) Existing or new development on lot. An accessory dwelling unit is allowed only on lots used or developed as one household dwelling units or two -household dwelling units, regardless of the number of dwelling units allowed by zoning. A certificate of occupancy will only be granted to an accessory dwelling unit after it has been granted to the principal dwelling unit. (3) Parking. One on -site parking space shall be required for an accessory dwelling unit. Parking for the accessory dwelling unit is in addition to the required parking for the principal dwelling unit, as set forth in chapter 18.36. The required parking space may be in tandem with other required spaces, but must be identified on a site plan. (4) Unit size and configuration. Except as modified in subsection (5) herein, for a single -household or two - household dwelling unit of 1,000 square feet or more of living space, the accessory dwelling unit shall be no larger than 50 percent of the living space of such principal dwelling unit, or 800 square feet, whichever is smaller. For a principal dwelling unit of less than 1,000 square feet of living space, the accessory dwelling unit shall be no larger than 500 square feet. No accessory dwelling unit shall be less than 200 square feet. For the purposes of this subsection, square footage calculations shall exclude any garage, porch or similar area. (5) Unit size exception. For a new accessory dwelling unit enclosed entirely within a structure containing an existing single -household or two -household dwelling unit, the accessory dwelling unit shall be no larger than the existing single -household or two -household dwelling unit. (6) Occupancy. No more than three persons shall occupy an accessory dwelling unit. (7) Number of accessory dwelling units per lot. Only one accessory dwelling unit shall be allowed for each single -household or two -household dwelling unit. Accessory dwelling units shall be included as separate dwelling units for the purpose of calculating the minimum lot area required by section 18.28.200 for the R-2, R-3 and RM zone districts only. (8) Owner occupancy. The property owner, as reflected in title records and evidenced by voter registration, vehicle registration or other similar means, must occupy either the principal dwelling unit or accessory dwelling unit. The director may waive this requirement for temporary absences provided that the owner has occupied the principal or accessory dwelling unit for a minimum of two years and submits proof of the temporary absence. (9) Design. To preserve the appearance of the single -household dwelling, accessory dwelling units built as additions or separate structures shall be designed in the following manner: (a) The design of the accessory dwelling unit shall be similar to the design of the principal dwelling unit by use of similar exterior wall materials, window types, door and window trims, roofing materials and roof pitch; (b) If the entrance to the accessory dwelling unit is visible from an adjacent street, it shall be designed in a manner as to be clearly subordinate to the entrance of the principal dwelling; Created: 2022-09-27 09:31:52 [EST] (Supp. No. 14, Update 3) Page 1 of 2 10